shutterspeed varies between 7,8, and f generation of OLC same for aperture read the olc version only once
shutterspeed varies between 7,8, and f generation of OLC
same for aperture
read the olc version only once

gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2